REPAIR TO ROOF TREATMENT IN DOMESTIC AREA AT AF STATION CHANDIGARH UNDER GE(AF) CHANDIGARH

Amount

Note :The unit rate quoted by the tenderer under Col No (13) of Sch `A’ (BOQ) unless specifically mentioned otherwise such as labour only/fixing only, for all items of works shall be deemed to be including cost of all materials, labour, tools and plants, testing and commissioning of work in position complete as required for entire completion of work.

Demolition of mud phuska on roofs any thickness including mud plastering (whether full thickness removed or only a part thereof) and removal of rubbish outside MoD land , complete all as specified and directed by Engineer-in-Charge.

Water proofing treatment on horizontal roof surfaces in the following manner including removing of all the debris out of MoD land , complete all as specified and directed by Engineer-in-Charge :- (a) Taking out of existing treatment such as tarfelt including roof treatment , cleaning of concrete surfaces and washing down of any description for preparation or as specified in particular specification before water proofing treatment of roof horizontal surfaces including raking out joints, hacking for key, scrubbing down with water, etc. (b) Roughening of surfaces of old concrete floor/slab by wire brushing, sweeping, cleaning and washing down to remove all loose dust etc, and brushing neat cement slurry @ 3.00 kg/Sqm on floor/roof surface before PCC padding. (c) 15mm thick screed plaster on RCC slab in cement mortar 1:6 in and including using water proofing compound @ 3% by weight of cement and finishing the surface even and fair without using extra cement . (d) Applying a coat of bituminous primer conforming to IS-3384 :1986 @ 0.40 ltr/sqm (e) Providing with 3 mm thick APP water proofing membrane minimum weighing 3kg/sqm reinforced with non woven polyster matt (wt. not less than 150 gms/sqm) laid on primed surface by using butane torch by torch application with a side lap of 10 cm & 15 cm end lap weinghing not less than 3 kg/sqm duly sealed at over laps & joints with flame (by torch application) all as per manufacturer’s instructions. (f) Finally finished with a coat of bitumastic aluminium paint over the membrane.

Water proofing treatment on vertical surfaces in the following manner including removing of all the debris out of MoD land , complete all as specified and directed by Engineer-in-Charge :- (a) Taking down of existing treatment plastered of wall surfaces of any description ,cleaning of surfaces and washing down for preparation before water proofing treatment of vertical surfaces including raking out joints, hacking for key, scrubbing down with water, etc. (b) 15 mm thick on brick or concrete surfaces in cement mortar (1:4) mixed with 3% of WPC and finishing the surface even and fair without using extra cement . (c) Applying a coat of bituminous primer conforming to IS-3384 :1986@ 0.40 ltr/sqm (d) Providing with 3 mm thick APP water proofing membrane minimum weighing 3kg/sqm reinforced with non woven polyster matt (wt. not less than 150 gms/sqm) laid on primed surface by using butane torch by torch application with a side lap of 10 cm & 15 cm end lap duly sealed at over laps & joints with flame (by torch application) all as per manufacturer’s instructions. (f) Finally finished with a coat of bitumastic aluminium paint over the membrane.

Plain cement concrete (1:2:4) type B-1 using 20 mm graded mechanically crushed stone aggregates as in roof padding to maintain the required slope or to prepare gola etc icluding weathering slightly rounded or chamfered angles and throating as directed including necessary form work in and including demolition of (un-reinforced) cement concrete of any description or as roof padding and coveringg concrete in any position not otherwise specifically provided for and remove all the debris out of MoD land , complete all as specified and directed by Engineer-in-Charge.

40 mm thick brick tiles laid on roof and including 15 mm thick screed bed in CM (1:6) and jointed grouted flush in cement mortar (1:3) mixed with 5% of crude oil by weight of cement in and including dismantling of stone slabs and tiles of any description or thickness laid dry or with mortar and pointed and removal of rubbish outside MoD land , complete all as specified and directed by Engineer-in-Charge. Note : Servicable brick tiles retrived from demolition of this item shall be used after proper cleaning and washing of old brick tiles under item No.06 below.

40 mm thick brick tiles (old retreived servicable tiles shall be reused) laid on roof and including 15 mm thick screed bed in CM (1:6) and jointed grouted flush in cement mortar (1:3) mixed with 5% of crude oil by weight of cement in and including dismantling of stone slabs and tiles of any description or thickness laid dry or with mortar and pointed and removal of rubbish outside MoD land , complete all as specified and directed by Engineer-in-Charge. Note:Servicable brick tiles retrived from demolition of item No.05 and this item shall be reused under this item after proper cleaning and washing of old bricks.

Steel water tubing, 15 mm bore medium grade ISI Marked, galvanized with all fittings and fixed complete to walls, ceiling or laid in floors,cutting existing steel tubing & screwing, if required for alterations and additions in and including taking up or down existing unservicable tubing and connections, cleaning for re fixing or removal to store, complete all as specified and directed by Engineer-in-Charge. Note: Fittings & specials as required shall be provided by the contractor. Contractor's rate shall be deemed to include the cost of fittings provided.

Steel water tubing, 20 mm bore medium grade ISI Marked , galvanized with all fittings and fixed complete to walls, ceiling or laid in floors ,cutting existing steel tubing & screwing, if required for alterations and additions in and including taking up or down existing unservicable tubing and connections, cleaning for re fixing or removal to store, complete all as specified and directed by Engineer-in-Charge. Note: Fittings & specials as required shall be provided by the contractor. Contractor's rate shall be deemed to include the cost of fittings provided.

Rotational moulded PVC, tripple layered, water storage tanks of capacity 500 litre (cylindrical vertical with closed top), ISI Marked, hoisted and fixed in position, with & including all fittings such as GI tank nipple etc. including balll valve high pressure of PTMT with epoxy coated aluminium door and high density plastic ball screwed for 20mm dia iron pipe and fixed (minimum wieght 20mm 210gms in and including dismantling PVC water tanks exc 250 ltr but n. exc 500 ltr capacity by disconnecting existing water connection and removal from site ,complete all as specified and directed by Engineer-in- Charge.

Rotational moulded PVC, tripple layered, water storage tanks of capacity 1000 litre (cylindrical vertical with closed top), ISI Marked, hoisted and fixed in position, with & including all fittings such as GI tank nipple etc. including balll valve high pressure of PTMT with epoxy coated aluminium door and high density plastic ball screwed for 20mm dia iron pipe and fixed (minimum wieght 20mm 210gms in and including dismantling PVC water tanks exc 500 ltr but n. exc 1000 ltr capacity by disconnecting existing water connection and removal from site ,complete all as specified and directed by Engineer-in- Charge.

Ball valve high pressure of PTMT with epoxy coated aluminium door and highdensity plastic ball screwed for 20mm dia iron pipe and fixed (minimum wieght 20mm-210 gms and fixed as in repair, complete all as specified and directed by Engineer-in-Charge.

Gun-metal, globe or gate valves, with iron wheel head, screwed both end for iron pipe and fixed for 20 mm bore dia fixed as in repair , complete all as specified and directed by the Engineer in -Charge.

Disconnecting existing tanks of capacity exceeding 250ltrs but n. exceeding 500ltrs, draining out of water, setting a side( or lowering if required) for repair/cleaning and removing accumulated sluge/dirt scales from tank bottom, side and from mouths of circulating pipes of service tanks located on roof of building and disinfecting the tank using bleaching powder to make the tank bacteria free, writing by stencil date of cleaning of tank with white synthetic enemel paint on black ground "Cleaned on (date)" height of words100mm, and hoisting if required, refixing and reconnecting in position after cleaning ,complete all as specified and directed by Engineer-in- Charge.

Disconnecting existing tanks of capacity exceeding 500 ltrs but n. exceeding 1000ltrs, draining out of water, setting a side( or lowering if required) for repair/cleaning and removing accumulated sluge/dirt scales from tank bottom, side and from mouths of circulating pipes of service tanks located on roof of building and disinfecting the tank using bleaching powder to make the tank bacteria free, writing by stencil date of cleaning of tank with white synthetic enemel paint on black ground "Cleaned on (date)" height of words100mm, and hoisting if required, refixing and reconnecting in position after cleaning and removal of rubbbish outside MOD land,complete all as specified and directed by Engineer-in- Charge.

PVC (SWR) pipes 110 mm bore single socketed in any length with ruber rings joints fixed to walls with necessary brackets and making good the mouth of rain water pipe in and including taking down old eaves and gutters and rainwater pipe ( any size and pattern) ,complete all as specified and directed by Engineer-in- Charge.

PVC (SWR) bends any radius 110mm bore fixed with solvent cement in any position as per site requirement , complete all as specified and directed by Engineer-in-Charge.

Cleaning and preparation of roof (RCC/Brick tiles/Cement concrete) surface and made free of dirt, foreign particles, laitance followed by grinding all protrusions to make surface modulated. There after, inspection for cracks on the surface caused by thermal expantion contraction and repairing the cracks after making “V” groove with suitable cutter machine, filled with Repair Morter/General Purpose Grout in the proportions as recommended by manufacturer,. Supplying and applying High performance Hybrid Polyurea elastomeric waterproofing coating cold applied of spray applied liquid membrane with following specifications: (a) Elongation of range 400%-600% (b) Tensile strength of 8-12 N/mm2 (c) Crack bridging ability of 3.00- 4.00 mm (d) Hardness (Shore’A’, ASTM D2240) of range 50-70 The application shall include final base preparation, epoxy primer application in rato 1:1 (resin:hardner) with 100% water dilution and application of Hybrid ployurea in two coats in 6 hrs interval to achieve total min thickness 1 to 1.50 mm at a total min consumption of 1.5 kg per Sqm . The application/treatment shall be carried out by authorised rep of approved specialist firm/manufacturer ,complete all as specified and directed by Engineer-in-Charge. contd/---

The application should be done by company's authorised applicator. Graco sprayer by a company authorised applicator. Company back warranty of 15 years is to be given by company. High performance Hybrid Polyurea elastomeric waterproofing coating of Smart Care Ultron. Resin is one of the components of Ultron Primer, which is two components water-based epoxy system, it is classified as SR-B2, 0 according to EN 13813, having properties like color of pale yellow, viscosity 900mPa.s, density 1.15kg/l and adhesion of >3N/mm2. Hardener is one of the components of PU Magnum Primer, which is a two-component water-based epoxy system, It is classified as SR-B2, 0 according to EN 13813, having properties like color of pale yellow, viscosity 37000mPa.s, density 1.08kg/l and adhesion of >3N/mm2. Makes for item no. 17 to 19:- Asian Paints SmartCare/ Thermax/Grace SIKA/FOSROC /Berger. Notes for item no. 17 to 19 :-(i) The defect liability period of water proofing treatment to RCC roof slab including sunken floors shall be 10 years and the contractor shall be responsible to keep the entire building(s) free from leakage/seepage for a period of 10 years after certified date of completion. The contractor may obtain a similar guarantee from the specialist firm engaged by him for the purpose. (ii) An amount equal to 5.0% worked out on the cost of High performance Hybrid Polyurea elastomeric waterproofing treatment at contract rates towards guarantee shall be retained out from the Final Bill amount towards security deposit for High performance Hybrid Polyurea elastomeric waterproofing treatment as specified in P. S, Cluase no11.3 of CA.

All as per item no 17.00 above but on vertical surfaces like parapet wall, facia etc ,complete all as specified and directed by Engineer-in-Charge.

Cleaning the surface/junction and made free from dirt, foreign particles, laitance followed by grinding all protrusions to make surface modulated. Thereafter, inspection for cracks on the junction / surface caused by thermal expansion contraction. Making of Gola’s at all the corners with Polymer modified mortar(1:4 Cement: sand with 3.5% Acrylic of cement weigth) including finishing with mortar/ Micro concrete/ General purpose grout as recommended proportionally as per recommendation of manufacture. The application should be done by company's , complete all as specified and directed by Engineer-in-Charge.

Note :Schedule of credit to be deducted on acceptances of bid.Details of Schedule of credit is given in tender documentse.

SHRI GANESH CONSTRUCTION CO. (BID ID -3122824)

M/S GOYAL ASSOCIATES (BID ID -3110816)

Baba Engineers and Contractors (BID ID -3111038)

M/S NAVEEN PATHANIA (BID ID -3111155)

jmv engineers (BID ID -3104827)

M/s VARINDER PAL SINGH AND CO (BID ID -3121119)